Timer



Sept. 8, 1925. 1 1,552,827

L. w. DANFORTH TIMER Filed March 11, 1922 2 Sheets-Sheet i gwwmtoz I 2. Lil/D al wm.

Sept. 8, 1925.

Filed March 11, 1922 L. W. DANFORTH TIMER 2- Sheets-Shoet -2 Patented Sept. 8, 1925.

UNITED STATES LYNN WALTER DANFOBTH, OF TULSA, OKLAHOMA.

TIMER.

Application filed March 11, 1922.

To all whomit mazg concern:

Be it known that I, LYNN VVAi/rnn DAN- FORTH, a citizen of the United States, residing at Tulsa, in the county of Tulsaand ,State of Oklahoma, have invented a new and useful Timer, of which the following is a specification.

This invention aims to provide, in a timer, novel means whereby the contact member which is carried by the shaft will be held yieldingly against a disk or carrier which supports a plurality of contacts.

Another object of the invention is so to construct the timer shaft that the conductors will be protected against contact with the fan or fan belt and be protected, like wise, against saturation with oil or water.

lit. is within the province of the disclosure to improve generally and to enhance the utility of devices of that type to which the ivention appertains.

With the above and other objects in view, which will appear as the description proceeds, the invention resides in the co1nbina 25 tion and arrangement of parts and in the details of construction hereinafter described and claimed, it being understood that, within the scope of what is claimed, changes in the precise embodiment of the invention shown can be made without departing from the spirit of the invention.

In the accompanying drawings Figure 1 shows in front elevation, a device constructed in accordance with the invention; Figure 2 is a rear elevation; Figure 3 is a fragmental longitudinal section wherein parts appear in elevation; Figure 4 is an elevation showing the carrier; Figure 5 is an elevation showing the collar and the spring member which carries the contact; and F igure 6 is a section on the line 66 of Figure l.

The timer forming the subjectmatter of this application includes a casing 1 having the usual means 2 whereby it may be moved to change the timing. Suitable means (not shown) engage a depression 3 in the casing 1 to hold the casing assembled with any accessible part of the engine 1-. The casing 1 has an internal recess 5 defining a shoulder 6. A disk or carrier '5, preferably made of insulating material, is mounted in the recess 5 and engages the shoulder. An expansible Serial No. 543,007.

retaining ring 8 is disposed within the casing 1 and is interposed bet-ween the disk or carrier 7 and the part 4; of the engine, to hold the disk in the casing. The disk 7 carries terminals 9 having threaded stems 10 on which nuts 11 are mounted, one nut 11 serving to retain the terminal in place, and the nuts 11, on each terminal 10 cooperating to retain conductors 12 which, preferably, pass through a conduit 14 mounted if desired in an insulating thimble 15 carried by the easing 1. The conductors 12, it will be noted, are so housed and protected that they will not come into contact with the fan belt, nor will they be exposed to the action of oil, moisture or the like. The: disk or carrier 7 has a central opening and is pro 'ided with a forwardly projecting sleeve 16.

The shaft is indicated at 17 and projects into the opening 66 of the disk 7, and into the sleeve 16 thereof. On the shaft 17 is mounted a support 18, in the form of a collar having notches or seats 19 and 20, the seat 19 receiving a key 21 or thelike on the shaft 17, the collar thus being connected to the shaft torotate therewith. The collar 18 is surrounded by a helical retraction spring one end of which is provided with a tinger 23 engaged in the seat so that when the collar 18- rotates with the shaft 17, the spring 22 will rotate likewise. The spring is supplied at its rear end with an outstanding arm 24 carrying a contact 25. The spring 22 serves to draw the arm 24 toward the disk or carrier 7, the contact 25 bearing against the rear surface of the disk and coacting with the terminals 9,

Vhat is claimed is 1. In a device of the class described, a casing having a recess defining an internal shoulder in the casing, a disk in the recess and abutting against the shoulder, an expansible ring in the recess and engaging the disk, terminals on the disk, a shaft supported for rotation, a spring about the shaft, means for securing one end of the spring to the shaft, and a contact carried by the other end of the spring, the spring being retractile to draw the contact against the disk and the terminals, the disk having an opening for the reception of the spring.

2. In a device of the class described, a

casing, a disk like carrier engaged peripherally with the casing and having an opening terminals mounted on the carrier, a shaft extended into the opening, a retractile helical spring extended into the opening and disposed in cylindrical form about the shaft, means for securing one end of the cylindrical portion of the spring to the shaft, the other end of the cylindrical portion of the spring having an outstanding arm, and a contact mounted on the arm, the spring serving to maintain the contact in engagement With the carrier, for cooperation with the terminals.

In testimony that I claim the foregoing as my own, I have hereto aflixed my signature.

LYNN WALTER DANFORTH. 

